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AS321KTR-E1
Public Made by Adomby adom
Diodes Incorporated Operational Amplifier, SOT-25. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAS321KTR-E1
Diodes Incorporated · Operational Amplifier · SOT-25
AS321KTR-E1 from Diodes Incorporated, in a SOT-25. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | INPUT+ | input | Non-inverting input; common-mode range is 0V to VCC-1.5V and it may go to +36V without damage. |
| 2 | VEE | power_in | Negative supply, ground in single-supply operation (VEE = 0V); supply span VCC-VEE is 3V to 36V recommended, 40V absolute maximum. |
| 3 | INPUT- | input | Inverting input; common-mode range is 0V to VCC-1.5V and it may go to +36V without damage. |
| 4 | OUTPUT | output | Amplifier output, sources 40mA typical and sinks 15mA typical at VCC = 15V, short-circuit current 40mA typical. |
| 5 | VCC | power_in | Positive supply, 3V to 36V recommended, 40V absolute maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-25 |
| Category | Amplifiers |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage (25°C) | VIO | 2 | 5 | mV | VO = 1.4V, RS = 0Ω, VCC = 5V to 30V (Note 6) | 4 | |
| Input Offset Voltage (over temperature) | VIO | 7 | mV | VO = 1.4V, RS = 0Ω, VCC = 5V to 30V (Note 6) | 4 | ||
| Input Bias Current (25°C) | IBIAS | 20 | 100 | nA | IIN+ or IIN-, VCM = 0V | 4 | |
| Input Bias Current (over temperature) | IBIAS | 200 | nA | IIN+ or IIN-, VCM = 0V | 4 | ||
| Input Offset Current (25°C) | IIO | 5 | 30 | nA | IIN+ - IIN-, VCM = 0V | 4 | |
| Input Offset Current (over temperature) | IIO | 100 | nA | IIN+ - IIN-, VCM = 0V | 4 | ||
| Input Common Mode Voltage Range (lower limit) | VCM | 0 | V | VCC = 30V, CMRR ≥ 50dB | 4 | ||
| Supply Current (25°C) | ICC | 0.35 | 0.8 | mA | RL = ∞, VCC = 5V | 4 | |
| Supply Current (over temperature) | ICC | 0.45 | 1 | mA | RL = ∞, VCC = 5V | 4 | |
| Supply Current (25°C) | ICC | 0.45 | 1.2 | mA | RL = ∞, VCC = 30V | 4 | |
| Supply Current (over temperature) | ICC | 0.65 | 1.5 | mA | RL = ∞, VCC = 30V | 4 | |
| Large Signal Voltage Gain (25°C) | GV | 85 | 100 | dB | VCC = 15V, VO = 1V to 11V, RL ≥ 2kΩ | 4 | |
| Large Signal Voltage Gain (over temperature) | GV | 80 | dB | VCC = 15V, VO = 1V to 11V, RL ≥ 2kΩ | 4 | ||
| Common Mode Rejection Ratio (25°C) | CMRR | 60 | 70 | dB | VCM = 0V to (VCC-1.5)V, RS ≤ 10kΩ | 4 | |
| Common Mode Rejection Ratio (over temperature) | CMRR | 60 | dB | VCM = 0V to (VCC-1.5)V, RS ≤ 10kΩ | 4 | ||
| Power Supply Rejection Ratio (25°C) | PSRR | 70 | 100 | dB | VCC = 5V to 30V, RS ≤ 10kΩ | 4 | |
| Power Supply Rejection Ratio (over temperature) | PSRR | 60 | dB | VCC = 5V to 30V, RS ≤ 10kΩ | 4 | ||
| Output Source Current (25°C) | ISOURCE | 20 | 40 | mA | VIN+ = 1V, VIN- = 0V, VCC = 15V, VO = 2V | 4 | |
| Output Source Current (over temperature) | ISOURCE | 20 | mA | VIN+ = 1V, VIN- = 0V, VCC = 15V, VO = 2V | 4 | ||
| Output Sink Current (25°C) | ISINK | 10 | 15 | mA | VIN+ = 0V, VIN- = 1V, VCC = 15V, VO = 2V | 4 | |
| Output Sink Current (over temperature) | ISINK | 5 | mA | VIN+ = 0V, VIN- = 1V, VCC = 15V, VO = 2V | 4 | ||
| Output Sink Current at low output voltage | ISINK | 12 | 50 | µA | VIN+ = 0V, VIN- = 1V, VCC = 15V, VO = 0.2V | 4 | |
| Output Short Circuit Current to Ground | ISC | 40 | 60 | mA | VCC = 15V | 4 | |
| Output Voltage Swing High (25°C) | VOH | 26 | V | VCC = 30V, RL = 2kΩ | 4 | ||
| Output Voltage Swing High (over temperature) | VOH | 26 | V | VCC = 30V, RL = 2kΩ | 4 | ||
| Output Voltage Swing High (25°C) | VOH | 27 | 28 | V | VCC = 30V, RL = 10kΩ | 4 | |
| Output Voltage Swing High (over temperature) | VOH | 27 | V | VCC = 30V, RL = 10kΩ | 4 | ||
| Output Voltage Swing Low (25°C) | VOL | 5 | 20 | mV | VCC = 5V, RL = 10kΩ | 4 | |
| Output Voltage Swing Low (over temperature) | VOL | 30 | mV | VCC = 5V, RL = 10kΩ | 4 | ||
| Power Supply Voltage (VS = VCC-VEE) | VS | 40 | V | 3 | |||
| Differential Input Voltage | VID | 40 | V | 3 | |||
| Input Voltage | VIN | -0.3 | 40 | V | 3 | ||
| Operating Junction Temperature | TJ | 150 | °C | 3 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 3 | ||
| Lead Temperature (Soldering) | TLEAD | 260 | °C | Soldering, 10 Seconds | 3 | ||
| Thermal Resistance to Ambient | θJA | 260 | °C/W | 3 | |||
| Supply Voltage | VCC | 3 | 36 | V | 3 | ||
| Ambient Operating Temperature Range | TA | -40 | 85 | °C | 3 | ||
| Thermal Resistance (Junction to Case) | θJC | 101 | °C/W | SOT25 | 4 |
CAD (KiCad official)
- Symbol:
AS321KTR-E1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-25, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm tall, datasheet A, max). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files:
as321ktr-e1-etched.step/as321ktr-e1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);as321ktr-e1.step/as321ktr-e1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (10 pp, sha256
a36bb8a9d282efac, retrieved 2026-11-12, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).